Hot-air heating plant.



R. G. ELLIOTTQ HOT AIR HEATING- PLANT.

APPLICATION nun 111304. 1008.

Patented Apr. 13, 1909.-

2 SHEET8SHEBT 1.

r .LF. 11 1-----Z WITNESS-ES: E 9 .6 :Mia W may;

UNITED ROBERT G. ELLIOTT, F TOLEDO, OHIO HOT-AIR HEATING PLANT.

Specification of Letters f'atent.

merited April 13, 1909.

Application filed December 4, 1508. Serial No. 465,977.

T 0 all whom 'it may concern:

Be it known that I, ROBERT G. ELLIOTT, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a certain new and useful Improved Hot-Air Heating Plant; and I do hereby declare the following to be a full,

dear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyiug drawings, and to the figures of reference marked thereon, which form a part of this ecifica'tion.

'5 3 My invention relates to hot-air heatingplants of the class intended more particuan iv for use in lar 0 buildings, such as schoolhou ies, ofi'ice bui dings or the like, and has for its object not only to increase the efiicientlv of such plants, but to reduce the cost of operating the same to a minimum, and also to place the regulation of the temperature of the air distributed to the rooms under the more perfect control of the attendant, as will hereinafter be more fully dcscribed.

The operation, construction and arrangement of the parts of my invention are fully described in the following specification, and illustrated in the accompanying drawings, in

which,

F i ure 1 is a horizontal section on the line w w in Fig. 2, of a plant embodying the fcaturcs of my invention. Fig. 2 is [vertical section on the line 1 a; in Fig. 1, with )ortions of the dividing walls broken away. ig. 3 is a similar section on the line 2: z in 1, and Fig. 4 is a vertical transverse section on the line 1 y in F 1.

40 Referring to the drawings, 1 designates a furnace-room, in the rear of which are located a plurality of furnaces 2, while at one side thereof or at any other suitable point is located a fan or blower 3,wbich is intended 45 to force air into a cold-air chamber comprising compartments 4 and 4, which compartments are divided from each other by the. partition 5 extending from bottom to top thereof, as shown.

)9 The compartment 4 of the cold-air chamber communicates through openings 6 in the "given 7 thereof with a supplemental cold-air 'chamber 8, while the compartment 4 communicates through openings 9 in the wall .7 with a chamber 10, which is located in advance'of the chamber 8, and has the furnaces 2 disposed in the forward end thereof, "as shown, its forward wall, which divides it from. the furnace-room 1, being shown at 11. Thechamber 8 communicatesthrough openings 12 in its rear wall 13 with exit-fines 14, each of which has a distributin -pipe 15 leading from its upper end, while the enamber 10 communicates through openings 16, provided between the furnaces 2, with the ot-air chamber 17 which is superimposed on me chambers 8 and It), as best shown in Fig. 3. The hot-air chamber 17 communicates at its rear end through openings 18 in the wall 13 with the upper ends of the lines 14 above gravity gates 19, which gates are adapted to normally divide the fines 14 into upper and lower compartments, from the u er ones of which the distributing-pipes 15 lead. The opening of the gates 19 is controlled b cords :20, which lead to a point of vantage in the furnace room, or to any other place from which it may be desired to operate the gates.

The partition 5 which separates the coldair compartments 4 and 4*,has its forward end disposed substantially mid-way of the mouth of the exit-flue from the fan, .and is rovided at such point with a vertical gate 21,. WlllCl). 1s shiftable by means of cords '22,

to cause a greater or less amount of air to enter either of the compartments 4, 4", as is apparent. The rear end of the wall 5 connects with the side-wall 7 of. the cold-air chamber at substantially a; point in line with the partition 23, which separates the chambers 8 and 10, as shown in Fig. .1.

24 designates smoke exit-fines for the fur naes, which communicates with a common breaching 25 having an exit-pipe 26 leading therefrom, as shown, or in any other suitable manner.

In the operation of the plant embody-1g my invention, air is forced underpressure by the f on 3 into the cold-air chambers 4 and 4, the prpper amount being caused to enter each by placing the gate 21 in the desired csition or such purpose. The air which enters the chamber 4- is forccd into the chamber 10 through the opening 9 in the dividing-wall 7, and, having no other exit,

is caused topass through between the furnaces .2 and into the hot-air remaining-seven-tenths ol' cold-air chamber 17. from which it. tinds an exit through the openings 18 and upper ends of the ilues H into the dist-ribnting-pipcs 15. As the air which enters the hot-air chamber 17 becomes very highly heated in its passage between the furnaces 2, it is-necessary to provide some means for regulating the temperature of the air as it enters the pipes 15.

'lhis'is accomplished by the air which enters the compartment 4 of the coldaur chamber being lorced into the chamber 8 through the openings (3 and thence passing into the tines 14 through the openings 12 therein and being permitted to connningle with the hot-air which enters the upper ends of the compartments 14 from the hot-air chamber 17 by an opening of the gates 19 to the desired degree. It is estimated that by )assing three-tenths of the air output oi' the tan between the furnaces it is heated suliicientiy to heatthe which passes into the chamber 4 to a suitable temperature to heat the rooms.

[n the plants of the class described, which have heretofore been used, the wall 5 which divides the cold-air chamber into two (0H1- partments has been clii ninated, and communication provided between the chambers and It) through openings in the u all 23. This arrangement was found to be objectionable for the reason thatii' the gates in were partially opened, .th air-c'lrrcnts instead of passing from the chambers S and it) between the furnaces and into the hot-air chamber 17 from whence ithad an exit through the pipes 15, its course would be reversed and the air in the chamber 17 would pass down between thefurnaces 2 and-into the chambers 10 and 8, thus heating the cold air sup ily so that the air which passed up through the lines 14 to moderate the ttanperature of the air entering the pipes 15 was heated, thus very considerably lessening the efficiency of the plant. A further objection to this construction was that the large volume of cold air' passing between the furnaces 2 would tend to cool them so that more lire would be required to heat the air to the dcsirc'l tomperuture. With applicant's .urrangement, which eonsistsin dividing tbecold-air chamber into two compartments by the wait 5, and closing the communication between the chambers 8 and 10, a. portion onl of the cold air admitted to the cold-air chamher is forced pasothe furnaces thereby lnaling such portion to a considerably higher temperature thanthe entire volume of air which is forced into the cold-air chamber by the fan couid be heat d if directed through the spaces between the. furnaces, and also maintaining at all times a cold-airsupply or otunmingli'ng with the highly heated air,

the openings 16 whereby to moderate the. temperature thereof to the desircd'cxteut, as no' matter how much the gates are opened, the direction of flow of the heated air-currents cannot be reversed.

It is found by actual practice that by permitting only a portion of the cold air sup ly to' pass up between the boilers the 'i'ced consumption is reduced YUP) nearly one halt over that ofthe old form. This is accounted for by the fact that a small volume of cold air would not bare the same cooling etl'ect on the boilers aswould a large volume of cold air, thus requiring less fuel to maintain the boilers at their full or oesircd heating ctlicicnc). [thus also been found by the use of this construction that a room or rooms after having their windows'openetl for ai ing can be heated much more quickly than with the oid construction tltit to the admitting 0t the highly h ated air thereto; and it is also possible to more quickly cool a room by admitting cold air only thereto, as itis found with the old construction that a full opening of the rc;.:ulating'gates will cause a reversal of the how of the air currents so that the heated air will flow back from the hot air chamber to the cold air chambers, and thence up through the tines Lt and to the room, thus forcing heated instead of cool air into the room.

I desire it to be understood that my invention is not limited to an specified form, arrangcim-nt or size of the chambers or other parts thereof, except in so far as such limita tions are spccilicd in the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is;

1. lit a heating-plant of uaclass descri ed, a cold-air chamber. a partition in said chamber dividing it into two non-com municating cfltlipal'llmhts. nit-ans for forcing air into said compartments, a pbnaiity of llues eommunicating with one of said coldair compartments. gates dividing said llucs-into u )pe: and lower compart uu-nts. distribul ingplpcs leadinz: from the upper of said lue compart ments, and a plurality of furnaces having spaces titcl'cltchvcen, sa d spaces being in connnnnication below tile furnaces with the cold-air compartment not. in cotnnnmication with said fines and in connuunication above the furnaces with theuppcr compartments of said llues. substantially as described,

leading from one at said chambers, gates dividing said tlucs into or "er and lower compnrnm'nts, furnaces as ociated with the other of said chamhers and having passages thcrelretwccn which conununieate at one end with such chamber and at their other end with the upper of said iiue comparrzurnts, and dis; rihuting-pipcs leading from theuppcr of said iiue compartments.

15. In a heatingwhim of the class described. a. cold-air chamber, a wall dividing said chamber into two non-commuuicating compartments. a plurality of walls forming chambers, one or wlueh communicates with one ofsrud cold-air compartments and the other with the other of said cold-air compartments, and a hot-air chamber which superimposes the. chambers in communication with the cold-air compartments. exit-Hues leading from one of the chambers in communication with the coid-air compartments, gates dividing said tines into upper and lower compartments, the upper of which communicaie with the hot-air chamber, furnaces located in the chamber which communicates with the cold arr con mrtment not in communication with said ilues and having pas-- sages therelwtwecn in communication at one end with the chamber in which such furnaces are located and at their other end with the hot-airchamher, and distrihutiug-pipes leading from the upper of said tlue co1upartmcnts.

4. In a inviting-p ant of the class dcscriberL-a piuraiitv of walls forming the noncomuu' icating cold-air cham ers 4 and 4, the non-communicatiug chambers S and it), the former of which has communication with the cold-air chainlrer 4, while the latter has connuuuication with'the eold-air chamber 4" and the superimposed hot-air chamber 17,

exit-tines leading from the chamber S, gates dividing said. llucs into up er and lc' er compartments, the upper el \v ucn communicate "with the cold-air chamhcr l7,,distributingin communication with said first, mentioned chamber. "ates dividing said llucs into u ipcr and lower compmtlmcms, the upper of w uch communicate with said hot-air chamber, furnaecs' associated withsaid hot-air and other chamber and having passages therehetween which open comnumication between said chambers, and distributiug-pipes leading from the upper of said llue'compartments.

6. In a heating-plant ot' the class described, a plurality of walls dividing said plant into two'non-columnuiea'ing cold-air compartments, a chamber H) and a. hot-air chamber 17, furnaces associated with the chambers H) and 17 and having passages therebctween opening communication between such chambers, the chamber H) being in comuumicaLion with one of said cold-air compartments, exit-flees in communication with the other of said cold-air compartments, gates dir'iding said exit-Hues into nppenand lower compartments, the upper of which communicate with the hot-air chamber 17, distribution-pipes leading from the upper com mrtments'ol' said lines, means for forcing air into said cold -air compartments, and means for varying the supply of air admitted to either of said compartments, substantially asdcscribed.

7. In a plant oi the class described, a plurality of llues,-'gates dividing said ilucs into upper and lower compartments, dist ributingpipcs leading from said upper compartments, a plurality of walls providing commun'eation between one of said cold-air compartments and the lower compartments of said tines and between the other of said cold-air compartments-flud the upper of said flue compartments. and heating means disposed to heat the air passing between said last mentioned cold-air compartment and the upeer compartment of said lines.

H. in a plant of the class described, a, plurality of lines, gates dividingsaid lines into upper and lower compartments, distributingpipes leading from said upper compartments, a plurality oiwalls providing communication between one of said cold-air compartments and the lower compartments of said lines and between the other of said cold-air conmart-mcnts and the upper of said flue cooniartmcnts, heating means disposed to heat the air passing between said last mcntioncd cold-air compartment and the upper compartment of said fines, and means movable to vary the supply of air admitted to either of said cold-air compartments.

9. In a heating-plant of the class described, a plurality of walls dividing the plant into two n n-comrnunicating cold-air eompart 'nents, a chamber in communication with one of said col l-air compartments, and n hot-air chamber in communication with said chamber, an exit-flue in communication with the other of said cold-air compartments, gates dividing said llue into upper and lower compartments. the upper of which communicates with said hot-air chamber, hot-air distributing moans imiding fl'ufll the upper of signed my name to this specifivn-tion in the Sam] lino com mrtmvnts, mid heating means presence 01 two subscribing witnesses.

s. i I i a 1 y 11 \(K itul mm the hi i an (ham )0 and said ROBERT G LLLIOFR other chambm' for beating the air passing through said cimiiibers, substantially as de- Witnesses: scribed. C. V. OWEN, I

In testimony whoa-00f I have hereunto CORNELL SCHREIBER. 

